Temporary binder.



- No. 647,646. Patented Apr. I7, |900. lJ. BYS-TR''M.

TEMPORARY BINDER.

(Application led Feb. 26, 1900.) m

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TEMPORARY BINDER.

SPECIFICATION forming part of Letters Patent No. 647,646, dated April 17, 1900.

Application filed February 26,1900. Serial No. 6,513. iNo model.)

To @ZZ whom, it 'noa/y concer/t:

Be it known that I, J oHN BYsTRoM, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Temporary Binders, of which the following is a specification.

The object of this invention is the production of an improved means for holding together in book form detached leaves, as those of a perpetual ledger, which leaves may be withdrawn or new ones inserted at will. As in other binders of a similar kind, the leaves which go to make u p the body of the book are perforated at suitable intervals near their inner edges tov receive the holding-pins ot' the binder.

In the accompanying drawings, Figure l is a face view of the binder-frame. Fig. 2 is an end elevation of the same. Fig. 3 is a longitudinal section on dott-ed line 3 3 of Fig. 2. Fig. is a face view showing the binder-frame provided with book-covers and having leaves inserted. Fig. 5 is end view of the same as shown in the preceding iigure. Fig. 6 is a transverse section through the binder-frame on dotted line 6 G of Fig. 3, and Figs. 7 and S are detail views of the means for locking the hinged members of the binder-frame together.

Like letters of reference indicate corresponding parts throughout the several views.

In the production of this binder I provide the two hinged members A,substantially alike in form, each having the back portion A and the side portion A2.` Curved holding-pins A3, concentric with the pivotal bearing between the two hinged members A, are rigidly secured to the sides A2 of the members A, eX- tending inwardly from said sides and of a length sniiicient nearly to touch the side A2 of' the opposite member A. These pins are for receiving the leaves of the binder.

A4 are screws for securing the side portions A2 to the back portions A. lYhere these screws extend through the back portions A they are surrounded by sleeves A5. The screws A4 connect the back portions A of the members A to members of the hinge-joint between said members A.

B is the hinge between the two members A. It is composed of the tubular casing B', having elongated openings B2 in its walls. Within the casing and fitting quite closely to its inner diameter are provided the four independent plugs B3, each having an angular notch B4 near its periphery for the reception of the end of one ot' the sleeves A5, said plugs also being threaded to receive the screws A4. Each member A has two plugs B3 in the casing B', which plugs lie opposite the elongated openings B2 in the walls of the tubular casing B in order thatthe screws A4 and the sleeves A5 may extend through said elongatedopenings.

In order to lock the hinged members A in a closed position, I have provided the two spring-latches C and C, lying between the two sides A2 and extending inward, being raised a little above the back portions A of each member. At their meeting ends the latch C is provided with an opening C2 and the latch C' with a tongue C3 for engaging the opening C2 and locking the parts irmly together. The projection C4 on the latch C' is to receive the thumb of the operator to disengage said tongue C3 from the opening C:2 to separate the hinged members A.

In practice the frame shown in Figs. l and 2 is covered with leather or other suitable material agreeably with the rules of the bookbinders art, and leaves suitably perforated at their inner edges are placed upon the curved holding-pins A3. The members A are locked together by the spring-latches C and C while the book is in use, excepting when it is desirable to remove leaves from or insert additional ones into the binder. The projection C4 is then depressed, withdrawing the tongue C3 from the opening C2, and the members A open upon the hinge-joint B. The parts are now in the positions indicated by Figs. i and 5 and leaves may be withdrawn from or inserted into the book at will. Vthen the body of the book has been arranged satisfactorily, the members A are shut together upon the hinge-joint B and locked in a closed position by the spring-latches C.

I claim as my inventionl. In a binder, in combination, two folding IOO members, each having a back and a side portion; a leaf-holding means; a tubular hingecasing having independent plugs therein and means for rigidly connecting the said folding members with said independent plugs.

2. In a binder, in combination, two folding members, each having a back and a side portion; a leaf-holding means; a tubular hingecasing having transversely-elongated openings in its walls; independent plugs in said casing; means for rigidly connecting the said folding members with saidindependentplugs; and a locking-latch -for holding said hinged members in a closed position.

3. 1n a binder, in combination, two folding members, each having a back and a side portion ;.curved pins extending inward from said side portions, for holding the leaves; a tubular hinge-casing having transversely-elongated openings in its walls; independent plugs in said casing; means for rigidly connecting said foldingmembers with said independent plugs; and a spring locking-latch extending inward from each of said side portions, which latches are adapted to engage and hold the hinged members in a closed position.

4. In a binder, in combination, two folding members, each having a back and a side portion; curved pins extending inward from said side portions, for holding the leaves; a tubular` hinge-casing having transversely-elongated openings in its walls; independent plugs in said casing, which plugs are each provided with a notch and athreaded opening; screws extending through the folding members,

'adapted to engage the threaded openings in JOHN BYSTROM.

Vitnesses:

L. L. MILLER, GEO. L. CHINDAHL. 

